An available surface modification process of nano-Si3N4 was given using KH-5 60 as modifying agent and acetone as dispersion medium. Nano-Si3N4 suspension w as of the greatest stability when the nano-Si3N4 powder was ...An available surface modification process of nano-Si3N4 was given using KH-5 60 as modifying agent and acetone as dispersion medium. Nano-Si3N4 suspension w as of the greatest stability when the nano-Si3N4 powder was modified with prope r amount of KH-560, which was 1%(wt) of the amount of nano-Si3N4 powder. Elem ents of C, O and Si were detected on the surface of the modified nano-Si3N4 pow der by means of XPS. The TEM of the suspension showed that the average particle size of nano-Si3N4 became smaller and dispersibility of nano-Si3N4 was improve d in the medium of acetone when the nano-Si3N4 powder was modified with proper amount of KH-560. The results obtained showed that KH-560 had been bound on th e surface of nano-Si3N4 particles.展开更多
利用双螺杆挤出机通过熔融共混制备了尼龙6/三元乙丙橡胶(EPDM)/接枝三元乙丙橡胶(EPDM g MAH)和尼龙6/接枝三元乙丙橡胶(EPDM g MAH)塑料合金,并研究测定了其吸水性、力学性能和流变行为。结果表明:接枝三元乙丙橡胶明显改善尼龙6与三...利用双螺杆挤出机通过熔融共混制备了尼龙6/三元乙丙橡胶(EPDM)/接枝三元乙丙橡胶(EPDM g MAH)和尼龙6/接枝三元乙丙橡胶(EPDM g MAH)塑料合金,并研究测定了其吸水性、力学性能和流变行为。结果表明:接枝三元乙丙橡胶明显改善尼龙6与三元乙丙橡胶之间的相容性,合金的吸水率明显降低,在保持较高强度的同时冲击性能远远优于尼龙6,接近或超过韧性尼龙;熔体指数明显下降、成型加工性较尼龙6明显改善。展开更多
综述了聚对苯二甲酸乙二醇酯(PET)改性的最新研究进展,并针对 PET 冲击强度低以及结晶性能差的缺点,分析了其作为工程塑料改性的必要性。PET 的主要改性方法有共混改性、纳米复合材料改性以及添加成核剂、成核促进剂改性等。文中还简单...综述了聚对苯二甲酸乙二醇酯(PET)改性的最新研究进展,并针对 PET 冲击强度低以及结晶性能差的缺点,分析了其作为工程塑料改性的必要性。PET 的主要改性方法有共混改性、纳米复合材料改性以及添加成核剂、成核促进剂改性等。文中还简单介绍了 PET 的改性机理。最后,对 PET 的生产和应用进行了总结。展开更多
文摘An available surface modification process of nano-Si3N4 was given using KH-5 60 as modifying agent and acetone as dispersion medium. Nano-Si3N4 suspension w as of the greatest stability when the nano-Si3N4 powder was modified with prope r amount of KH-560, which was 1%(wt) of the amount of nano-Si3N4 powder. Elem ents of C, O and Si were detected on the surface of the modified nano-Si3N4 pow der by means of XPS. The TEM of the suspension showed that the average particle size of nano-Si3N4 became smaller and dispersibility of nano-Si3N4 was improve d in the medium of acetone when the nano-Si3N4 powder was modified with proper amount of KH-560. The results obtained showed that KH-560 had been bound on th e surface of nano-Si3N4 particles.
文摘利用双螺杆挤出机通过熔融共混制备了尼龙6/三元乙丙橡胶(EPDM)/接枝三元乙丙橡胶(EPDM g MAH)和尼龙6/接枝三元乙丙橡胶(EPDM g MAH)塑料合金,并研究测定了其吸水性、力学性能和流变行为。结果表明:接枝三元乙丙橡胶明显改善尼龙6与三元乙丙橡胶之间的相容性,合金的吸水率明显降低,在保持较高强度的同时冲击性能远远优于尼龙6,接近或超过韧性尼龙;熔体指数明显下降、成型加工性较尼龙6明显改善。
文摘综述了聚对苯二甲酸乙二醇酯(PET)改性的最新研究进展,并针对 PET 冲击强度低以及结晶性能差的缺点,分析了其作为工程塑料改性的必要性。PET 的主要改性方法有共混改性、纳米复合材料改性以及添加成核剂、成核促进剂改性等。文中还简单介绍了 PET 的改性机理。最后,对 PET 的生产和应用进行了总结。
